What is Code/Best Practices for Running a 240V cable to other Side of Room?

I need to move a 240V junction box from one side of the room (it used to feed a heater circuit) to the other. I presume this means I'll have to fish wire from the wallbox on the North wall up and over in the attic to the new box on the South wall.

What is code/best practice for this? Can I use heavy duty romex or do I have to enclose the wire in a tube of some kind? Any other tips?

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What is Code/Best Practices for Running a 240V cable to other Side of Room?

What do you mean by "heavy duty" romex? Never heard that term before.

Just use the same cable as the circuit and an appropriately sized junction box. If the existing box is big enough just bring the new wire into that and splice there.

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Answers based on the 2008 & 2011 NEC.

What is Code/Best Practices for Running a 240V cable to other Side of Room?

Quote:

Originally Posted by oh'mike

Speedy Petey---have the codes remained the same over the years? Does the new circuit need four wires? two power one neutral and a ground?

Like the others have said, it depends on the circuit and the load. The whole "the code has changed for '220' " thing is a complete mis-nomer.

The only thing that has changed is that circuits for detached structure feeders and for household cooking appliances and electric dryers are not allowed to use the neutral to also serve as the grounding means. This is ONLY for 120/240v circuits. A straight 240v circuit would not apply since it does not utilize a neutral conductor.

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What is Code/Best Practices for Running a 240V cable to other Side of Room?

Quote:

Originally Posted by imautoparts

No, this is for me. In my utility room I'm wanting to move the dryer from one wall to the other.

Then why not say this from the start, as opposed to vaguely saying you "need to move a 240V junction box" and asking if you should use "heavy duty romex"? This little detail would have eliminated confusion and cleared things up.

__________________
Sometimes I feel like if I answer any more questions it is like someone trying to climb over a fence to jump off a bridge and me giving them a boost.
Answers based on the 2008 & 2011 NEC.

What is Code/Best Practices for Running a 240V cable to other Side of Room?

Quote:

Originally Posted by Speedy Petey

Then why not say this from the start, as opposed to vaguely saying you "need to move a 240V junction box" and asking if you should use "heavy duty romex"? This little detail would have eliminated confusion and cleared things up.

Well, I'm not moving the junction box for the dryer. I'm using a separate 20A 240 circuit that I'm pulling from a thermostat/spst junction box that used to feed a large baseboard heater in the same room. That way I'll still have 240V on the original wall, plus 240V on a new circuit on the garage wall. I'm thinking that may come in handy sometime as I am looking at buying a big air compressor and two 240V outlets on separate circuits will be just what I need.

What is Code/Best Practices for Running a 240V cable to other Side of Room?

So you are NOT moving your dryer from one wall to the other like you said in post #10???
I'm confused.

__________________
Sometimes I feel like if I answer any more questions it is like someone trying to climb over a fence to jump off a bridge and me giving them a boost.
Answers based on the 2008 & 2011 NEC.

The Following User Says Thank You to Speedy Petey For This Useful Post: